CESIUM - 137 IN MOUNTAIN CREEK LAKE

A must read for everyone interested in the environment in Dallas and Grand Prairie, Texas: the water and sediment article on Mountain Creek Lake at http://pubs.usgs.gov/wri/wri034082/pdf/wri03-4082.pdf This reads like a chemistry manual-columns and columns of toxic substances found in Mountain Creek Lake - and their amounts. See a few chemicals you don't recognize and can't pronounce? Join the club. Because a friend realized Cesium -137 is radioactive, I studied it/the radionuclide on the EPA and the NRC websites-even on Wikipedia at first! Notice in the US Geological Survey article, as I did, that the peak occurrence of C was in the 1960s during the Cold War.
The Cold War was noted for missile testing and defensive missile readiness against Soviet attack. Literally ringing Dallas, several launches capable of delivering a nuclear missile were poised to defend our military bases, plane manufacturers, and aeronautics industry, so critical in the "space age." Find the Nike missile system with the "Hercules" missile on the Internet, as well as Skyhawk planes at the Naval Air Station. Note that weapons were usually stored at "weapons facilities" on or next to the base. The Dallas Naval Air Station was/is next door to the Dallas weapons facility (NWIRP) on Mountain Creek Lake, as a matter of fact.
Do you remember the Cold War, Khruschev's threatening cackle reminiscent of Alfred Hitchcock, and the chilling fear of "nuclear winter"? (I hardly dared to imagine what that meant.) When I was ten in 1962, we had a family plan to get out of Dallas if an emergency occurred. We planned to go to our grandparents' lake house, where bomb shelters still exist in the earth-three hours from Dallas.
But, back to Cesium-137. Can anyone figure out how it found its way into Mt Creek Lake? Did it move from burial in soil into water? Was the cesium a waste product dumped in the water? Was it a spill, or inside a leaking cannister or part of equipment in a plane? In a huge pile of scrapped metal? Was testing with radiation going on in Dallas like it was at Navy bases in California? Or were groups charged with the development of missiles there, testing a bit as they designed?
Some say C-137 floated over from weapons testing grounds in New Mexico or Wyoming. Perhaps some did, but very important... I read that Cesium-137 entered the lake in correlation with "historical discharge" from the NAS west lagoon. If that's true, the C source would probably not just be Wyoming! But, of course, the true record is in the lake sediment.
I have noticed some/many experts-particularly govt workers, seem to not want to talk about this. Why? It was a long time ago and maybe not too dangerous if we stay away from the lake. Also, we don't want to overreact and make people think a huge problem with radioactivity is in our midst; and it's difficult or impossible to prove what happened. I can understand this but I believe that regardless of how Cesium -137 found the lake, Mountain Creek Lake clean up is desirable for many reasons. Groundwater is unusable, an aquifer is TCE-poisoned and stopped up with VOC matter, the lake itself is full of metals and PCBS, the air is full of what is in the water, and a radionuclide is embedded in sediment. Then...here comes natural gas drilling!
If these reasons aren't enough, what is?